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<table width="100%" summary="page for hirose"><tr><td>hirose</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>
Failure Time of PET Film
</h2>

<h3>Description</h3>

<p>The <code>hirose</code> data frame has 44 rows and 3 columns.
</p>
<p>PET film is used in electrical insulation.  In this accelerated life test
the failure times for 44 samples in gas insulated transformers.  4 different
voltage levels were used.
</p>


<h3>Usage</h3>

<pre>
hirose
</pre>


<h3>Format</h3>

<p>This data frame contains the following columns:
</p>

<dl>
<dt><code>volt</code></dt><dd>
<p>The voltage (in kV).
</p>
</dd>
<dt><code>time</code></dt><dd>
<p>The failure or censoring time in hours.
</p>
</dd>
<dt><code>cens</code></dt><dd>
<p>The censoring indicator; <code>1</code> means right-censored data.
</p>
</dd></dl>


<h3>Source</h3>

<p>The data were obtained from
</p>
<p>Hirose, H. (1993) Estimation of threshold stress in accelerated life-testing.
<em>IEEE Transactions on Reliability</em>, <b>42</b>, 650&ndash;657.
</p>


<h3>References</h3>

<p>Davison, A.C. and Hinkley, D.V. (1997) 
<em>Bootstrap Methods and Their Application</em>. Cambridge University Press.
</p>


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